render-video-from-images.bash

# 1. download images from Unsplash
# e.g. using:
# https://addons.mozilla.org/en-US/firefox/addon/save-all-images-webextension/
# https://github.com/splash-cli/splash-cli
# https://github.com/MehediH/Bulksplash

# 2. rename *.jpeg to *.jpg
for f in *.jpeg; do mv "$f" "${f/.jpeg/.jpg}"; done

# 3. resize images into resized folder
# mogrify courtesy of ImageMagick https://imagemagick.org/script/mogrify.php
mogrify -path resized -geometry 1280x960^ -gravity center -crop 1280x960+0+0 *.jpg

# 4. render video from resized images
ffmpeg -framerate 6 -pattern_type glob -i 'resized/*.jpg' -c:v libx264 -c:a copy -shortest -r 30 -pix_fmt yuv420p resized.mp4